An expanding selection of powdered products is opening up some dangerous doors, according to federal officials who are warning consumers not to get caught up in the novelty.

The Suffolk County health department, too, is urging buyers to stay away from one product in particular: powdered pure caffeine.

A single teaspoon of the powder is roughly equivalent to the amount of caffeine in 25 cups of coffee, according to the U.S. Food and Drug Administration, which issued a warning following the death of a teenager who used the product in July. (more…)